PISCATAWAY, N.J. -- The shocking suicide of a college student whose sex life was broadcast over the Web illustrates yet again the Internet's alarming potential as a means of tormenting others and raises questions whether young people in the age of Twitter and Facebook can even distinguish public from private.

Cruel gossip and vengeful acts once confined to the schoolyard or the dorm can now make their way around the world instantly via the Internet, along with photos and live video.

"It's just a matter of when the next suicide's going to hit, when the next attack's going to hit," said Parry Aftab, a New Jersey lawyer who runs the website WiredSafety.

Last week, Rutgers University freshman Tyler Clementi jumped to his death from the George Washington Bridge after his roommate and another classmate allegedly used a webcam to secretly broadcast his dorm room sexual encounters with another man. The two classmates have been charged with invasion of privacy, with the most serious charges carrying up to five years in prison.

The suicide of Clementi, a shy, gifted 18-year-old violinist, shocked and disturbed gay rights activists and others on campus.

"Had he been in bed with a woman, this would not have happened," said Rutgers student Lauren Felton, 21, of Warren, N.J. "He wouldn't have been outed via an online broadcast, and his privacy would have been respected and he might still have his life."

The Associated Press found at least 12 cases in the U.S. since 2003 in which children and young adults between 11 and 18 killed themselves after falling victim to some form of "cyberbullying" - teasing, harassing or intimidating with pictures or words distributed online or via text message.

In probably the best-known case, 13-year-old Megan Meier of Daddenne Prairie, Mo., hanged herself in 2006 after she received messages on MySpace - supposedly from a teenage boy - cruelly dumping her. An adult neighbor was later found guilty of taking part in the hoax, but the conviction was overturned.

Earlier this year, 17-year-old Alexis Pilkington of West Islip, N.Y., who had landed a college soccer scholarship, killed herself after receiving a stream of nasty messages.

Gregory Jantz, founder of A Place of Hope, a Seattle mental health care center, said young people who use the Internet to spread something damaging about others often don't realize how hurtful it can be because many of them have grown up in a world that has blurred the line between public and private.

"Our kids are in a different zone now," Jantz said.

Aftab said young people who would never bully someone face to face do it online in part because of the often-false sense of anonymity that the Internet provides.